OFPST_PORT_DESC reply (xid=0x2):
 2(ovn-0a837f-0): addr:b2:47:db:18:05:eb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:9e:80:b7:cb:af:94
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
